Model T bronze marvel carb question

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Model T Ford Forum: Forum 2014: Model T bronze marvel carb question
Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Wednesday, April 23, 2014 - 12:03 am:

Is the fuel bowl cover just a flat plate with the tag riveted on?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce in Georgetown TX on Wednesday, April 23, 2014 - 07:36 am:

Yes, it is just a piece of zinc plated .036" steel. These are great running carbs although I don't trust any carb with a cork float. Be sure to turn off the gas when the car is unattended.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Wednesday, April 23, 2014 - 11:36 am:

Thank you. I thought it might be just a flat piece.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Chris Bamford, Edmonton AB on Wednesday, April 23, 2014 - 12:45 pm:

"...I don't trust any carb with a cork float. Be sure to turn off the gas when the car is unattended."

Interesting. Could you elaborate? Your phrasing sounds like there is potential sudden failure-to-float.

I'm helping a friend this morning with a cork-float Marvel Model E carb (non-T) that leaks unless the gas is shut off.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jerry VanOoteghem on Wednesday, April 23, 2014 - 04:52 pm:

The cork floats were usually sealed with shellac. Modern fuels, with alcohol additives, easily dissolve the shellac and cause the cork to become saturated with gas/alcohol, causing it to either sink, or not be quite as buoyant as it once was.

Some have battled this problem by sealing the cork with POR-15, epoxy, or gas tank sealant, (the kind that claims to be impervious to alcohol).

There are other reasons why a float valve might leak as well.

I ALWAYS turn off the gas, using a valve at the carburetor, regardless of what kind of float I've got.


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